A train crosses two persons travelling at 3 kmph and 5 kmph in the same direction in 10 seconds and 11 seconds respectively. The speed of the train is:

PQRS is square whose side is 20 cm. By joining opposite vertices of PQRS are get four triangles. What is the sum of the perimeters of the four triangles?

Direction: Study the information given below carefully and answer the questions given below.
There are 450 coupons which can be used in Pedicure and Hair cutting. Ratio between Males to Females who use their coupons in Hair cutting is 13: 7 Number of males who use their coupons in Pedicure is 72 more than number of females who use their coupon in Hair cutting. Total number of males who use their coupon in Pedicure and Haircutting together is 174 more than total number of females who use their coupon in Pedicure and Haircutting together.

Females who use their coupon in Haircutting is how much more than Females who use their coupon in Pedicure? 

2 years, a sum was put at SI at a certain rate. If the rate was 3 % higher, it would have fetched 300 more. What will be the sum? 

If the average marks of three batches of 55, 60 and 45 students respectively is 50, 55 and 60, then the average marks of all the students is: 

If 12 men and 16 boys can do a piece of work in 5 days; 13 men and 24 boys can do it in 4 days, then the ratio of the daily work done by a man to that of a boy is 

The total Surface area of a solid hemisphere is 1039.5 cm². The volume ( in cm³) of the hemisphere is: (Take π=22/7)

Directions: The following questions are accompanied by three statements (A) or (I), (B) or (II), and (C) or (III). You have to determine which statement(s) is/are sufficient/necessary to answer the questions.

What is rate of interest per annum?
A. The amount becomes Rs 9331.20 in 2 years at compound interest.
B. The difference between CI and SI at the same rate of interest in 2 yrs is Rs 51.20.
C. The amount invested in Rs 8000.